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Maintenance and Battery Replacement
Battery Charging
The batteries are valve-regulated, non-spill-able, lead acid and should be kept charged to attain
their design life. The Liebert PST4 charges the batteries continuously when it is connected to the
utility input power. If the Liebert PST4 will be stored for a long time, Emerson recommends
connecting the UPS to input power for at least 24 hours every 4 to 6 months to ensure full recharge
of the batteries.
Precautions
Although the Liebert PST4 is designed and manufactured to ensure personal safety, improper use
can result in electrical shock or fire. To ensure safety, observe the following precautions:
•
Turn off and unplug the UPS before cleaning it.
•
Clean the UPS with a dry cloth. Do not use liquid or aerosol cleaners.
•
Never block or insert any objects into the ventilation holes or other openings of the UPS.
•
Do not place the UPS power cord where it might be damaged.
Battery Replacement Precaution
Before proceeding, please review the battery safety precautions.
WARNING
!
Risk of electric shock and explosion. Can cause equipment damage, injury and
death. Do not dispose of the battery in a fire. The battery may explode. Do not
open or damage the battery. Released electrolyte is toxic and is harmful to skin
and eyes. If electrolyte comes into contact with the skin, wash the affected area
immediately with plenty of clean water and get medical attention.
WARNING
!
Risk of electric shock. Can cause equipment damage, injury and death.
A battery can present a risk of electrical shock and high short-circuit current. The
following precautions should be observed when working on batteries:
• Remove watches, rings and other metal objects.
• Use tools with insulated handles.Wear rubber gloves and boots.
• Do not lay tools or metal parts on top of batteries.
• Disconnect charging source prior to connecting or disconnecting battery
terminals.
• Determine if the battery is inadvertently grounded. If it is inadvertently
grounded, remove the source of the ground. Contact with any part of a
grounded battery can result in electrical shock. The likelihood of such shock will
be reduced if grounds are removed during installation and maintenance
(applicable to a UPS and a remote battery supply not having a grounded supply
circuit).
Information for the Protection of the Environment
UPS SERVICING - This UPS makes use of components dangerous for the environment (electronic
cards, electronic components). The components removed must be taken to specialized collection
and disposal centers.
NOTICE TO ALL CUSTOMERS: DISPOSAL OF OLD APPLIANCES - This product
has been supplied from an environmentally aware manufacturer that complies with
the Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/CE. The
"crossed-out wheelie bin" & recycle symbol is placed on this product to encourage
you to recycle wherever possible. Please be environmentally responsible and
recycle this product through your recycling facility at its end of life. Do not dispose of
this product as unsorted municipal waste. Follow local municipal waste ordinances
for proper disposal provisions to reduce the environmental impact of waste electrical
and electronic equipment (WEEE).
Specifications
System Specifications
Model Number
Capacity (VA / W)
Unit Dimensions, in. (mm) W x D x H
Unit Weight, lbs (kg)
Shipping Dimensions,
in. (mm) W x D x H
Shipping Weight, lbs (kg)
Input AC
Nominal Voltage
Voltage Range
Frequency Range
Protection
Surge Energy Rating
Input Cord
Output AC (On Utility)
Nominal Voltage
Voltage Range
Frequency Range
Efficiency
Output AC (On Battery)
Nominal Voltage
Voltage Range
Frequency Range
Waveform
Transfer Time
Overload Capacity
Protection
Backup Time (Full Load / Half Load), min
Battery Type
Battery Manufacturer / Model
Battery Quantity x VDC x Ah
Battery Backed Outlets
Surge Only Outlets
Environmental Requirements
Operating Temperature, degF (degC)
Operating Elevation, feet (meter)
Operating Temperature, degF (degC)
Operating Elevation, feet (meter)
Relative Humidity
Storage Temperature, degF (degC)
Storage Elevation, feet (meter)
Audible Noise
Agency
Safety
RFI / EMI
Surge Immunity
Transportation
5
PST4-660MT120
PST4-850MT120
660 / 400
850 / 500
12.4 x 7.2 x 3.3 (314 x 183 x 83)
9.4 (4.3)
9.7 (4.4)
15.0 x 10.20 x 5.6 (380 x 260 x 143 mm)
10.6 (4.8)
11.0 (5.0)
120 VAC
100-140 VAC
50 or 60 Hz, +/- 5Hz, auto-sensing
Resettable Circuit Breaker
320 Joules
6 ft. attached with NEMA 5-15P
120 VAC
96-146 VAC
50 or 60 Hz, +/- 5Hz, auto-sensing
>90% at full load
120 VAC
Nominal ±8%
50 or 60 Hz, ±1%
PWM Simulated Sine wave
6-8 ms, typical
110% for 10 seconds,
120% immediate shutdown
Electronic
(over current, short circuit w/ latching shutdown)
2 / 5
2 / 5
Valve Regulated Lead Acid (VRLA)
CSB / GP1272
CSB / HR1234W
Leoch / DJW12-7.0
Leoch / DJW12-9.0
1 x 12V x 7.0 / 7.2Ah
1 x 12V x 9.0Ah
(4) NEMA 5-15R
(4) NEMA 5-15R
(4) NEMA 5-15R
(4) NEMA 5-15R
32-104 (0-40) without derating
0-4,921 (0-1,500) without derating
32-86 (0-30) without derating
4,922-9,842 (1,500.5-3,000) without derating
0-95% non-condensing
5 to 113 (-15 to 45)
0-49,212 (0-15,000)
<40 dBA @ 3 ft (1 m) from all sides
cTUVus (UL 1778 / CSA22.2 No. 107.1)
FCC Subpart J, Class B
ANSI 62.41 (IEC 62040-2 2nd Edition)
ISTA Procedure 1A
7
Battery Replacement Procedure
1.
Turn the UPS on its side.
2.
Remove and set aside the two battery-compartment retaining screw (Figure 1).
3.
Slide the battery compartment cover outward and lift-off to expose the battery (Figure 2).
4.
Grasp the battery and gently pull it out far enough to disconnect the battery wires.
5.
Disconnect the battery positive (Red) wire and the battery negative (Black) wire. (Figure 3).
6.
Remove the battery and set aside.
7.
Orient the new battery in the same direction as the original battery and place the new battery
close enough to connect the battery wires.
Note: Replace the battery with the same type and number as originally installed.
8.
Connect the battery negative (Black) wire to the battery negative terminal.
9.
Connect the battery positive (Red) wire to the battery positive terminal.
Note: when connecting the last wire to the battery there can be a small spark,
this is normal.
10. Fully insert the new battery into the UPS and re-install the battery compartment cover.
11. Re-install the battery compartment retaining screw.
12. Properly dispose of the old batteries at an appropriate recycling facility or return them to
Emerson in the packing material for the new batteries.
13. The UPS is now ready for normal operation.
Technical Support / Service
Web Site
www.liebert.com
Monitoring
liebert.monitoring@emerson.com
800-222-5877
Outside North America: +00800 1155 4499
Single-Phase UPS & Server Cabinets
liebert.upstech@emerson.com
800-222-5877
Outside North America: +00800 1155 4499
Three-Phase UPS & Power Systems
800-543-2378
Outside North America: 614-841-6598
Thermal Management Systems
800-543-2778
Outside the United States: 614-888-0246
Locations
United States
1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229
Europe
Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD) Italy
+39 049 9719 111
Fax: +39 049 5841 257
Asia
7/F, Dah Sing Financial Centre
108 Gloucester Road, Wanchai
Hong Kong
852 2572220
Fax: 852 28029250
While every precaution has been taken to ensure the accuracy and completeness of this literature,
Liebert Corporation assumes no responsibility and disclaims all liability for damages resulting from use of this
information or for any errors or omissions.
© 2016 Liebert Corporation
All rights reserved throughout the world. Specifications subject to change without notice.
® Liebert is the registered trademark of Liebert Corporation.
All names referred to are trademarks or registered trademarks of their respective owners.
SL-23289_REV1_8-16
590-1412-501B
Emerson Network Power
www.emersonnetworkpower.com
6
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